Patent US2661632A successfully refreshed from Google Patents.
US2661632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin multiple speed transmission
Assignee: FRIED KRUPP LOKOMOTIVFABRIK
•
Filing: 1951-03-08
•
Granted: 1953-12-08
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Lammerz Ernst
- 👤 Herrmann Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:30
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/07; B; B61; B61C; B61C9/00; B61C9/08; B61C9/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19037; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/19219; Y10T74/19284
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |